package org.bouncycastle.asn1.x509;

import java.io.IOException;

import org.bouncycastle.asn1.DERGeneralizedTime;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DERPrintableString;
import org.bouncycastle.asn1.DERUTF8String;

/**
 * The default converter for X509 DN entries when going from their string value
 * to ASN.1 strings.
 */
@SuppressWarnings({ "deprecation" })
public class X509DefaultEntryConverter extends X509NameEntryConverter {
    /**
     * Apply default coversion for the given value depending on the oid and the
     * character range of the value.
     * 
     * @param oid
     *            the object identifier for the DN entry
     * @param value
     *            the value associated with it
     * @return the ASN.1 equivalent for the string value.
     */
    public DERObject getConvertedValue(DERObjectIdentifier oid, String value) {
        if (value.length() != 0 && value.charAt(0) == '#') {
            try {
                return convertHexEncoded(value, 1);
            } catch (IOException e) {
                throw new RuntimeException("can't recode value for oid "
                        + oid.getId());
            }
        } else {
            if (value.length() != 0 && value.charAt(0) == '\\') {
                value = value.substring(1);
            }
            if (oid.equals(X509Name.EmailAddress) || oid.equals(X509Name.DC)) {
                return new DERIA5String(value);
            } else if (oid.equals(X509Name.DATE_OF_BIRTH)) // accept time string
                                                           // as well as # (for
                                                           // compatibility)
            {
                return new DERGeneralizedTime(value);
            } else if (oid.equals(X509Name.C) || oid.equals(X509Name.SN)
                    || oid.equals(X509Name.DN_QUALIFIER)
                    || oid.equals(X509Name.TELEPHONE_NUMBER)) {
                return new DERPrintableString(value);
            }
        }

        return new DERUTF8String(value);
    }
}
